| Number | Date | Country | Kind |
|---|---|---|---|
| 10-045004 | Feb 1998 | JP |
| Number | Name | Date | Kind |
|---|---|---|---|
| 3835220 | Matsui et al. | Sep 1974 | |
| 4024163 | Elliottt et al. | May 1977 | |
| 4183950 | Naumann et al. | Jan 1980 | |
| 4370346 | Punja | Jan 1983 | |
| 4376786 | Maurer et al. | Mar 1983 | |
| 4405640 | Punja | Sep 1983 |
| Number | Date | Country |
|---|---|---|
| 0061053A1 | Sep 1982 | EP |
| 2327883A | Feb 1999 | GB |
| 47-43333 | Dec 1972 | JP |
| Entry |
|---|
| L. Crombie et al, J. Chem. Soc. (C), 1970, pp. 1076-1080. |
| Database WPI, XP002104367, Feb. 9, 1993. |